Window-regulator lock



Feb. 9 is.

R. w. BOSTWICK WINDOW REGULATOR LOCK Filed Sept. 24, 1923 Patented Feb.9, 1926.

I UNITED STATES PATENT orrics.

ROBERT W. BOSTWICK, OF DETROIT, MICHIGAN. i

WINDOW-REGULATOR LOCK.

Application filed September 24, 1923. Serial no 664,558.

,To all whomizf may concern Be it known that I, Ronnnr W. Bos'rwron, acitizen of the United States of America, residing at Detroit, in thecounty of Wlayne and State of Michigan, have invented certain new anduseful Improvements in Nindow-Regulator Looks, of which the following isa specification, reference being had therein to the accompanyingdrawings.

The invention relates to window regulators designed particularly for usein motor vehicles and refers to a lock for holding the window in itsadjusted position. One of the objects of the invention is the provision\Vith these as well as other objects in view, the invention resides inthe novel features of construction, combinations and arrangements ofparts as more fully herein after set forth.

In the drawings:

Figure 1 is an inside elevation, partly broken away, of a motor vehicledoor with my invention applied;

Figure 2 is across section on the line 22 of Figure 1;

Figures 3 and 4; are cross sections respectively on lines 83 and 4:4: ofFig ure 2. a

1 is the lock board of a motor vehicle door and 2 the window verticallyslidably engaging in guideways in the hinge and lock upright members orposts of the door. The window regulator for raising and lowering thewindow, as shown in the present in stance, comprises the flexible rack 3connected near its lower end to the window and driven by means of adriving gear i upon the inner side of the lock board 1.

For locking the window in its various adjusted positions, I haveprovided a positive lock for holding the driving gear 4- from rotationin either direction. This lock is controlled by a rotatable handle 5which also controls the raising and lowering of the window. In detail,the lock comprises the ratchet wheel 6, the teeth of which areengageable by the pawls 7 and 8' pivotally mounted intermediate theirends upon the disk 9 which is secured to the shaft 10 of the'drivinggearby means of the transverse in 11 extendin throu h the shaft and en-L'.) i D gaging 111 diametrically opposite radial slots 12 in the disk.13 1s a U-shaped spring embracing the shaft 10 and having its oppositeends engaging the pawls 7 and 8 to force their noses outwardly and mtoengagement with the teeth of the ratchet wheel. The arrangements ofpawls is such that their noses engage teeth upon the ratchet wheel atopposite sides of the shaft 10 and as a consequence each pawl holdstheshaft and consequently the driving gear 4 from rotation in onedirection. Since the pawls engage teeth, the locking of the driving gearfrom rotation in either direction is positive.

For the purpose of alternately releasing the pawls from engagementwiththe teeth of the ratchet wheel, I have provided the I release member14 secured to the shaft 15 of the handle and provided with thetransverse pin 16 engageable between the free ends of the pawls 7 and 8.With this arrangement, when the handle 5 is rotated the release member.will also be rotated and its transverse pin will engage either the onepawl or the other, depending upon the direction of rotation, to rockthatpawl about the teeth, at which time the face will en gage the sprin forpreventing any further rocking movement from taking place and. alsopreventing the free end of the pawl from coming into engagement with.the teeth of the ratchet wheel while the driving gear is being rotatedfrom the handle. lVhile one of the pawls is retained disengaged from theratchet Wheel, the nose of the other pawl is sliding over the teeth ofthe ratchet wheel, and as soon as rotation of the handle is stopped, thepawl previously disengaged from the ratchet wheel is returnezl to itsnormal position by the spring 13 to cooperate with the other pawl inholding the window from either raising or lowering unless actuated bythe handle.

Toprovide a construction which is com paratiyely cheap to mai'iufactureand which provides bearings for the driving gear shaft and handle shaft,the casing for the pawls 7 and S and associated disk 9 comprises thecentrally recessed disk 17, the centrally apertured disk 18, and theratchet wheel therewith. I The'se disks and ratchet wheel are rigidlyhas a cylindrical flange 22 sleeved over the inner end of the handleshaft and secured thereto by a transverse pin, and since the handleshaft is journalled in the escutcheon 23, it is maintained inproperaxial position. The driving gear shaft in addition to beingjo'urnalled in the disk 17 is ournalled in the release member in axialalignment with the handle shaft. The pawls and 8, disk 9, ratchet wheel6, disks 1'? and 18 and release member 14 are preferably formed ofstampings.

hat I claim as my invention is:

l. The combination with a gear rotatable in opposite directions forraising and lower ing'a window, of a stationary ratchet wheel,

a disk between said ratchet wheel and gear and connected to the latter,pivoted pawls upon said disk and engageable with the teeth of saidratchet wheel on opposite sides of its axis, means for yieldably forcingsaid pawls into engagement with the teeth, and an operating memberhaving an alternative driving contact with the free ends of said pawlsfor releasing either of said pawls and subsequently rotating said gearin either direction through the released pawl and said disk.

2. The combination with a 'ear rotatable in'opposite directions forraising and lowering window, of a casing including a ratchet wheel, adisk rotatably mounted within said casing,'pawls pivoted upon said diskand cngag'eable with the teeth of said ratchet wheel, a shaft for saidgear journalled in said casingand connected. to said disk, and anoperating member journalled in said (as ing and adapted to have analternative driving engagement with said pawls for releasing thesame'and subseqiiiently rotating said gear.

3. The combination with a member movable in opposite directions forraising and lowering a window, of a stationary casing including aratchet wheel, a disk engaging and rotatably mounted within said casing,

pawis carried by said disk and engageablc with the diskof saidratchetwheel, a release member engaging and rotatably mounted in saidcasing, a projection upon said release member alternatively en a'ageablewith the free ends of said pawls, a shaft for said gear wheel ournalledin said casing and release member and connected to said. disk, and ahandle secured to said release mei'i'ibcr.

In testimony whereof I a'flix my signature.

ROBERT \V. BOSTWICK.

